Doug DeCinces, pictured last year, testified Wednesday in the trial of his Laguna Beach neighbor James Mazzo, who is accused of providing insider trading information to DeCinces in 2009. (File Photo)

Former Angels infielder Doug DeCinces testified Wednesday in federal court as the U.S. government continued its case against his Laguna Beach friend and neighbor James Mazzo.

A jury convicted DeCinces in May of multiple counts of insider trading after prosecutors alleged he benefited financially from information from Mazzo, who at the time was chief executive of Advanced Medical Optics Inc.

DeCinces, a real estate investor and business owner who spent six of his 15 seasons in major-league baseball with the Angels, confirmed to jurors Wednesday that he bought shares of Advanced Medical Optics on Jan. 5, 2009, the day after meeting Mazzo for dinner at Big Canyon Country Club, where the two were members.

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"Based on what I heard the night before, I felt like I did not have enough stock," DeCinces said.

After dinner, DeCinces said, Mazzo leaned over and asked if he was comfortable with the amount of Advanced Medical stock he owned.

"I felt I made a huge mistake," he said. "At that point, there was nothing I could do to take it back."

This is Mazzo's second round before a jury in this case. Jurors last year could not agree on whether he provided DeCinces with information related to the merger and deadlocked 8-4 in favor of conviction. Judge Andrew Guilford declared a mistrial.